Unify and simplify TrN for i18n (#18141)

Refer: https://github.com/go-gitea/gitea/pull/18135#issuecomment-1003246099

Now we have a unique and simple `TrN`, and make the fix of PR #18135 also use the better `TrN` logic.

1 files changed, 0 insertions, 64 deletions

diff --git a/modules/templates/helper.go b/modules/templates/helper.go
index a05c0c1a95..fc07b49c71 100644
--- a/modules/templates/helper.go
+++ b/modules/templates/helper.go
@@ -239,7 +239,6 @@ func NewFuncMap() []template.FuncMap {
 		"DisableImportLocal": func() bool {
 			return !setting.ImportLocalPaths
 		},
-		"TrN": TrN,
 		"Dict": func(values ...interface{}) (map[string]interface{}, error) {
 			if len(values)%2 != 0 {
 				return nil, errors.New("invalid dict call")
@@ -857,69 +856,6 @@ func DiffLineTypeToStr(diffType int) string {
 	return "same"
 }
 
-// Language specific rules for translating plural texts
-var trNLangRules = map[string]func(int64) int{
-	"en-US": func(cnt int64) int {
-		if cnt == 1 {
-			return 0
-		}
-		return 1
-	},
-	"lv-LV": func(cnt int64) int {
-		if cnt%10 == 1 && cnt%100 != 11 {
-			return 0
-		}
-		return 1
-	},
-	"ru-RU": func(cnt int64) int {
-		if cnt%10 == 1 && cnt%100 != 11 {
-			return 0
-		}
-		return 1
-	},
-	"zh-CN": func(cnt int64) int {
-		return 0
-	},
-	"zh-HK": func(cnt int64) int {
-		return 0
-	},
-	"zh-TW": func(cnt int64) int {
-		return 0
-	},
-	"fr-FR": func(cnt int64) int {
-		if cnt > -2 && cnt < 2 {
-			return 0
-		}
-		return 1
-	},
-}
-
-// TrN returns key to be used for plural text translation
-func TrN(lang string, cnt interface{}, key1, keyN string) string {
-	var c int64
-	if t, ok := cnt.(int); ok {
-		c = int64(t)
-	} else if t, ok := cnt.(int16); ok {
-		c = int64(t)
-	} else if t, ok := cnt.(int32); ok {
-		c = int64(t)
-	} else if t, ok := cnt.(int64); ok {
-		c = t
-	} else {
-		return keyN
-	}
-
-	ruleFunc, ok := trNLangRules[lang]
-	if !ok {
-		ruleFunc = trNLangRules["en-US"]
-	}
-
-	if ruleFunc(c) == 0 {
-		return key1
-	}
-	return keyN
-}
-
 // MigrationIcon returns a SVG name matching the service an issue/comment was migrated from
 func MigrationIcon(hostname string) string {
 	switch hostname {